sub request_handler{
    my ($r) = @_;
    my $args = $r->args();
    my $hostname = $r->hostname();

    $cgi = new CGI;
    $cgi->charset('UTF-8');

    my $pjx = CGI::Ajax->new( 'myFunc' => $get_response );
    $pjx->js_encode_function('encodeURIComponent');

    my $html = $pjx->build_html( $cgi, $show_html, {'-charset' => 'UTF-8' , '-Cache-Control' => 'no-cache, must-revalidate'} );
    $r->print($html );

    return OK;
}